OOTD Full Form - OOTD stands for Outfit of the Day. It's a well-liked slang which is widely used in fashion blogs, social media sites. Ootd, an internet abbreviation for outfit of the day , refers to what someone’s wearing on a particular day, usually in the context of fashion blogging. OOTD stands for Outfit Of The Day, a slang used on fashion blogs and social media. It also means Offer of the Day in business. Find translations, similar terms and FAQs on FullForms.com. Ootd stands for “ outfit of the day ” and is used to describe what someone is wearing on a particular day. It is commonly used in the context of fashion blogging and social media posts. The term ootd has gained popularity in recent years, especially on Instagram and other social media platforms.